{ "id": "1206.5418", "version": "v1", "published": "2012-06-23T17:45:31.000Z", "updated": "2012-06-23T17:45:31.000Z", "title": "Superlattice formed by quantum-dot sheets: density of states and IR absorption", "authors": [ "F. T. Vasko", "V. V. Mitin" ], "comment": "7 pages and 5 figures", "journal": "Physical Review B 85, 235321 (2012)", "categories": [ "cond-mat.mes-hall", "cond-mat.mtrl-sci" ], "abstract": "Low-energy continuous states of electron in heterosrtucture with periodically placed quantum-dot sheets are studied theoretically. The Green's function of electron is governed by the Dyson equation with the self-energy function which is determined the boundary conditions at quantum-dot sheets with weak damping in low-energy region. The parameters of superlattice formed by quantum-dot sheets are determined using of the short-range model of quantum dot. The density of states and spectral dependencies of the anisotropic absorption coefficient under mid-IR transitions from doped quantum dots into miniband states of superlattice strongly depend on dot concentration and on period of sheets. These dependencies can be used for characterization of the multi-layer structure and they determine parameters of different optoelectronic devices exploiting vertical transport of carriers through quantum-dot sheets.", "revisions": [ { "version": "v1", "updated": "2012-06-23T17:45:31.000Z" } ], "analyses": { "subjects": [ "73.21.Cd", "73.21.La", "78.67.Pt" ], "keywords": [ "ir absorption", "superlattice", "quantum dot", "anisotropic absorption coefficient", "optoelectronic devices exploiting vertical transport" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review B", "doi": "10.1103/PhysRevB.85.235321", "year": 2012, "month": "Jun", "volume": 85, "number": 23, "pages": 235321 }, "note": { "typesetting": "TeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012PhRvB..85w5321V" } } }